Shimla police arrested a government officer and three others for illegal drug trade near Shogi, 15 km from the capital town, on Sunday night.
The accused have been identified as Mahinder Kumar, regional manager of Himachal Road Transport Corporation (HRTC) Solan; and Kangra residents Vikas Kumar, Rajiv and Gyasuddin.
On a tip off, police intercepted the official vehicle of Mahinder Kumar, coming from Solan towards Shimla.
While checking his vehicle, police recovered 4.4kg ‘chitta’ (a colloquial for heroin).
Forensic investigation confirmed that the seized substance is ‘chitta’, said police sources.
It is also suspected that the manager misused his official vehicle for smuggling drugs earlier too.
Police said a Jammu and Kashmir resident had provided the drug to Kumar.
Further investigation is on.
Shimla superintendent of police (SP) DW Negi said police may arrest more people in the case as the investigation has just begun.